Lock body execution system and method for special optical coded lock

Abstract

The invention belongs to the technical field of physical encryption and intelligent security and protection, and discloses a lock body design for a special optical password lock, and the lock body is used for executing corresponding locking / unlocking operation after receiving a verification result of an optical password system. Therefore, the advantages that the optical password cannot be copied and counterfeited on the information level can be embodied on the physical execution level, that is, the functional design of the lock body is carried out according to the scene characteristics of the optical password, the reliability and the consistency of the locking action are improved on the basis that the compact structure is met, and the locking effect is improved. And the requirements of physical protection and system collaboration of high-security-level places are met. The safety device with the lock body matched with the optical password recognition system can be used in the optical password lock and related physical protection devices, and is suitable for occasions with high requirements for safety and reliability.

Description

Technical Field

[0001] This invention belongs to the field of physical encryption and intelligent security technology, and particularly relates to a mechanical lock body execution system and method for combination locks. Background Technology

[0002] Locks are a fundamental component of access control systems in high-security locations. They must not only fulfill the basic function of opening and closing doors but also serve as a robust physical barrier. With the increasing use of optical password recognition technology in the security field, finding a dedicated lock body that is structurally sound, provides excellent locking performance, and accurately reflects verification results has become a major challenge.

[0003] Most smart locks on the market today are general-purpose mechanical lock bodies that use electronic signals to unlock. They have few locking points, resulting in concentrated locking forces and insufficient resistance to damage. Furthermore, after prolonged use, they are prone to wear and tear or structural loosening due to mechanical reasons, making them unable to meet the required level of reliability. If used in high-security scenarios, they cannot meet the requirements for physical protection.

[0004] Optical combination locks have good anti-copying and anti-counterfeiting capabilities at the information level. However, since most optical combination locks on the market are designed according to traditional lock bodies, the internal mechanical actuators are not designed according to the characteristics of optical combination locks, nor do they consider how to maximize the security advantages of optical combination locks. As a result, their information security capabilities are not as good as physical locking capabilities. In addition, for the lock body actuators, most of them currently use push rod type, electromagnetic attraction type or eccentric cam type structures, which generally have problems such as long transmission paths, low driving efficiency, asynchronous operation of multiple actuators and insufficient compactness.

[0005] For example, in optical cryptography-based applications, the lock body needs to achieve synchronous locking at multiple positions and ensure reliable operation, compact structure, and strong correlation with password verification results. However, current lock bodies on the market are difficult to meet these requirements.

[0006] Therefore, a specialized mechanical lock body structure needs to be designed for optical cryptography. This type of lock body needs to be specifically designed in terms of both structural form and driving method. While ensuring the structure of the lock body is as compact as possible, it should achieve multi-point simultaneous locking, stable and reliable operation, and good suppression of external interference. This will enable the information security performance of optical cryptography to be reflected in the actual physical process and meet the requirements of the comprehensive technical performance of the lock body in high-security environments.

[0007] Based on the above analysis, the problems and shortcomings of the existing technology are as follows: Currently, most of them adopt push rod type, electromagnetic attraction type or eccentric cam type structure, which makes them generally have problems such as long transmission path, low driving efficiency, asynchronous action of multiple actuators and insufficient compact structure. Summary of the Invention

[0008] To address the problems existing in the prior art, the present invention provides a lock body design for a dedicated optical combination lock.

[0009] This invention is implemented as follows: a lock body design method for a dedicated optical combination lock: Step 1: A method of dual-disc linkage and slider-linkage composite drive is adopted.

[0010] The lock body is used to perform locking or unlocking actions based on the external password verification result, and includes: The base component, rotatable actuator, at least three locking actuators, transmission assembly, and drive interface.

[0011] The rotatable actuator is mounted on the base member and can rotate relative to it.

[0012] The locking actuators are spaced apart along the circumferential direction and, under the action of the transmission assembly, perform radial contraction or radial expansion relative to the base member.

[0013] The transmission assembly is used to convert the rotational motion of the rotatable actuator into the radial displacement of the locking actuator.

[0014] Locking is achieved when the locking actuator is in a radially contracted state, and locking is released when it is in a radially expanded state.

[0015] Furthermore, the locking actuator is a circular or arc-shaped structure, which enters the limiting structure that cooperates with the lock body in the locked state to form multi-point mechanical constraints.

[0016] Furthermore, the number of locking actuators is three, and they are distributed at equal angles along the circumference to form a stable multi-point force-bearing locking structure.

[0017] Furthermore, the transmission assembly includes a slider and a connecting rod structure. The slider moves in the radial direction and drives the locking actuator to move synchronously through the connecting rod.

[0018] Furthermore, a bearing assembly is provided between the rotatable actuator and the base member to reduce rotational resistance and improve the stability and repeatability of the lock body's operation.

[0019] Furthermore, the drive interface is used to connect to an external drive device, and by controlling the rotation angle of the rotatable actuator, the lock body can be switched between the locked and unlocked states.

[0020] Furthermore, the external driving device is a stepper motor, which is connected to the rotatable actuator through a transmission base to achieve precise control of the lock body's movement position.

[0021] Another objective of this invention is to provide an optical password lock, characterized in that it includes an optical password recognition module and the aforementioned lock body design.

[0022] The optical password recognition module is used to output the password verification result, and the lock body performs locking or unlocking actions based on the password verification result.

[0023] Furthermore, the optical password recognition module uses optical signals with random optical characteristics as password input to improve the system's security and non-replicability.

[0024] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this invention are as follows: (1) The mechanical structure has high stability and strong resistance to damage.

[0025] This invention abandons the traditional single-point locking tongue design and adopts a three-point symmetrical circular plate as the locking element. In the locked state, the three circular plates form a stable triangular force-bearing structure in the radial direction, which can effectively disperse external impact force. Its locking stability and resistance to violent opening are significantly better than traditional slider or single-claw structures.

[0026] (2) The movements are highly synchronized, avoiding jamming.

[0027] Through a spatial linkage structure of "inner ring disc + three sliders + three connecting rods," the three locking discs are forced to achieve absolutely synchronized telescopic movement. This design completely solves the problems of eccentric locking, mechanical jamming, or localized wear caused by transmission errors of multiple actuators in existing technologies.

[0028] (3) High driving efficiency and high space utilization.

[0029] The fan-shaped slider has a short movement path on the inner disc, and a large radial displacement of the disc can be achieved through the lever action of the linkage with only a small rotation angle. This high transmission ratio design makes the lock body structure extremely flat and compact, making it very suitable for embedding in embedded systems with strict size requirements.

[0030] (4) The stepper motor is precisely controlled and has high repeatability.

[0031] The system precisely adjusts the rotation angle of the inner disc by controlling the number of steps of the stepper motor, thereby strictly controlling the extreme positions of locking and unlocking. Compared with traditional electromagnetic locks, this solution does not have the problems of suction force attenuation and heat loss, and the consistency of switching actions is better.

[0032] (5) It is highly specialized and highly compatible with optical cryptography systems.

[0033] The lock body structure of this invention is specifically designed for high-security applications requiring optical password verification. When the integrated sensing and computing chip outputs a verified digital signal, the mechanical structure can respond in milliseconds and execute actions precisely, solving the problem of the mismatch between "high information security" and "low physical protection" in general-purpose lock bodies.

[0034] As research and application of optical signal-based password recognition and encryption verification methods in the door lock field continue to develop, existing research and product solutions mainly focus on the optical encryption principle, recognition algorithm, and decision logic itself. However, at the engineering level, optical combination locks have long lacked a dedicated lock body structure to match them. The lock body structure used in existing door lock products is usually designed around the force path and installation method of traditional mechanical lock cylinders or electronic locks. Its structural form, installation benchmark, and internal space layout are difficult to meet the comprehensive requirements of optical combination locks for stable installation of optical components, precise alignment of optical paths, and resistance to environmental interference. This makes it difficult for optical combination solutions to form stable and widely applicable complete lock products.

[0035] Existing lock body structures struggle to simultaneously address issues such as the lack of a definite reference point for the installation position of optical components, susceptibility of the optical path to interference from ambient light and light leakage through gaps, optical path misalignment caused by lock body deformation or assembly errors, and the lack of systematic matching between optical components, the door body, and the lock cylinder. Therefore, optical combination locks often remain at the stage of "emerging encryption methods" or experimental structures, failing to achieve stable implementation in engineering applications, thus creating a long-term technological gap in the design of matching lock body structures for optical combination locks.

[0036] To address the aforementioned issues, this invention proposes a lock body structure design specifically for optical combination locks. This design, starting from the overall lock body structure, provides a deterministic installation benchmark and structural constraints for the optical combination components, ensuring that the optical components maintain a stable and fixed relative position within the lock body. This makes them less susceptible to interference from ambient light, light leakage through gaps, structural deformation, and assembly errors during actual use. Simultaneously, while meeting the requirements for optical component installation and optical path stability, this lock body structure also considers the basic engineering requirements of door lock products in terms of strength, pry resistance, impact resistance, and universal assembly.

[0037] By incorporating the installation, positioning, and constraint of the optical password component into the design scope of the lock body structure itself, this invention achieves deep coupling between the optical password recognition function and the lock body structure, enabling the optical password lock to be put into practical application in a complete and stable form. It fundamentally solves the long-standing technical problem of optical password locks being difficult to balance and stably implement in terms of engineering-supported lock bodies, and fills the technical gap in the field of dedicated lock body structure design for optical password locks both domestically and internationally. Attached Figure Description

[0038] Figure 1 This is a flowchart of a lock body design method for a dedicated optical combination lock provided in an embodiment of the present invention.

[0039] Figure 2 This is a rendering of an embodiment of the combination lock provided in this invention.

[0040] Figure 3 This is a rendering of an embodiment of the integrated combination lock box provided in this invention.

[0041] Figure 4 This is a signal link flowchart provided in an embodiment of the present invention.

[0042] Figure 5 This is a circuit diagram of an embodiment of the integrated sensing and computing chip module provided in this invention.

[0043] Figure 6 This is a schematic diagram of an embodiment of the combination lock provided in this invention.

[0044] Figure 7 This is a schematic diagram of the structure of an embodiment of the stepper motor provided in this invention.

[0045] Figure 8 This is a structural schematic diagram of an embodiment of the integrated combination lock box provided in this invention.

[0046] Figure 9 This is an experimental verification diagram of the combination lock provided in the embodiment of the present invention.

[0047] Figure 6 In the middle: 1. Base disk; 2. Inner ring rotatable disk; 3. Slider assembly; 4. Connecting rod assembly; 5. Circular piece; 6. Limiting cylinder structure; 7. Stepper motor and its mounting base; 8. Nut drive base; 9. Bearing assembly. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] like Figure 1 As shown, an embodiment of the present invention provides a lock body design method for a dedicated optical combination lock, comprising the following steps: S101 adopts a dual-disc linkage and slider-linkage composite drive method.

[0050] Renderings Figure 2 , 3 ,in Figure 2 For the final demonstration of the design methodology, Figure 3 This is a display of a finished product featuring an integrated combination lock box.

[0051] The lock body is used to perform locking or unlocking actions based on the external password verification result, and includes: The base component, rotatable actuator, at least three locking actuators, transmission assembly, and drive interface.

[0052] The rotatable actuator is mounted on the base member and can rotate relative to it.

[0053] The locking actuators are spaced apart along the circumferential direction and, under the action of the transmission assembly, perform radial contraction or radial expansion relative to the base member.

[0054] The transmission assembly is used to convert the rotational motion of the rotatable actuator into the radial displacement of the locking actuator.

[0055] Locking is achieved when the locking actuator is in a radially contracted state, and locking is released when it is in a radially expanded state.

[0056] The locking actuator provided in this embodiment of the invention is a circular or arc-shaped structure, which enters the limiting structure that cooperates with the lock body in the locked state to form multi-point mechanical constraints.

[0057] The locking actuators provided in this embodiment of the invention are three in number and are distributed at equal angles along the circumference to form a stable multi-point force-bearing locking structure.

[0058] The transmission assembly provided in this embodiment of the invention includes a slider and a connecting rod structure. The slider moves in the radial direction and drives the locking actuator to move synchronously through the connecting rod.

[0059] The rotatable actuator and the base component provided in this embodiment of the invention are provided with a bearing assembly to reduce rotational resistance and improve the stability and repeatability of the lock body operation.

[0060] The drive interface provided in this embodiment of the invention is used to connect with an external drive device, and the lock body can be switched between locked and unlocked states by controlling the rotation angle of the rotatable actuator.

[0061] The external driving device provided in this embodiment of the invention is a stepper motor. The stepper motor is connected to the rotatable actuator through a transmission seat to achieve precise control of the movement position of the lock body.

[0062] The present invention provides an optical password lock, characterized in that it includes an optical password recognition module and the aforementioned lock body design.

[0063] The optical password recognition module is used to output the password verification result, and the lock body performs locking or unlocking actions based on the password verification result.

[0064] The optical password recognition module provided in this embodiment of the invention uses an optical signal with random optical characteristics as the password input to improve the security and non-replicability of the system.

[0065] Specific implementation of the present invention: Example 1: System-level signal link process of optical cryptographic lock.

[0066] like Figure 4 As shown in the figure, this embodiment illustrates the entire signal transmission link of the optical combination lock of the present invention from "optical signal recognition" to "mechanical lock body execution". Its purpose is to show that the dedicated mechanical lock body described in the present invention serves as the system terminal to receive instructions issued by the front-end optical combination system in order to achieve closed-loop security protection.

[0067] according to Figure 4 The signal transmission relationship in this link is composed of the following four cascaded components: 1. Optical cryptography identification (link start point) module. The system's sensing end is used to acquire laser password signals input from the outside. Unlike traditional electronic locks, which first collect signals through sensors and then transmit them to the CPU for processing, this part adopts an integrated sensing and computing design. It can combine the characteristics of the directly acquired light signals with the corresponding algorithm to obtain a unique logical judgment signal ("verification passed" or "verification failed") level instruction.

[0068] 2. For example Figure 5 As shown, the microcontroller is the signal conversion hub and the driving circuit.

[0069] This part receives the logical judgment value output from the previous stage and acts as a connector between the "information domain" and the "physical domain". The microcontroller converts the abstract logical instruction of "unlock / lock" into a corresponding power drive signal (i.e., a current pulse with a certain frequency and step number), and then loads it onto the motor drive circuit.

[0070] 3. This stepper motor has a power output interface.

[0071] It provides power to the mechanical actuator. Here, the stepper motor sends pulses through the drive circuit, which converts the electrical energy signal into the corresponding mechanical angle (rotational torque), ensuring that the subsequent mechanical actions are carried out strictly according to the preset angle, and providing the most basic driving force for precision locking.

[0072] 4. A dedicated mechanical lock body serves as the endpoint of the link and the core of execution.

[0073] This is the key execution part of the entire special lock body. It can input the rotational torque transmitted from the stepper motor into the special lock body, and convert it into the synchronous contraction or expansion of the locking part in the radial direction through the "slider-connecting rod" transmission mechanism inside the special lock body, and finally complete the opening and closing operation of the lock.

[0074] Example 2: A mechanical lock body structure applied to an optical combination lock.

[0075] according to Figure 6 As shown, this embodiment provides a mechanical actuator for an optical combination lock, which mainly consists of the following structure: Base disk 1; inner ring rotatable disk 2; slider assembly 3; connecting rod assembly 4; circular piece 5; limiting cylindrical structure 6; stepper motor and its fixing seat 8; nut transmission seat 9; and bearing assembly 9.

[0076] 1. Base disk (base component).

[0077] The base disk 1 serves as the mounting base for the entire machine frame and can be used to mount the outer end of the connecting rod, the circular piece, and the limiting cylindrical structure. Meanwhile, the bearing assembly 9 and the inner ring disk 2 are installed in the central hole, allowing them to rotate relative to each other.

[0078] The disc has a base plate made of metal or high-performance engineering plastic, with three equally divided hinge seats on it, which are hinged to the other end of the 120° linkage group 4.

[0079] 2. Inner ring rotatable disk (i.e., rotatable actuator).

[0080] The inner ring disk 2 is coaxially mounted at the center of the base disk, and low-damping relative rotation is achieved through the bearing assembly 9. Three radial guide grooves are machined on the inner ring disk, and one slider assembly 3 is installed in each groove. A drive interface (in this embodiment, a motor nut transmission seat 8) is provided on one side of the inner ring disk to connect with the output shaft or lead screw of the stepper motor and receive rotational power.

[0081] 3. Slider assembly and connecting rod assembly (transmission assembly).

[0082] The slider assembly 3 slides along the inner ring disk, while the drag block rotates along with the inner ring disk. One end of the connecting rod assembly 4 is hinged to the slider, and the other end is hinged to the circular piece 5. When the inner ring disk 2 rotates under the drive of the motor, the spatial position of the slider 3 changes. Under the action of the connecting rod 4, the rotational motion of the inner ring disk 2 is converted into the radial linear movement of the circular piece 5.

[0083] 4. Circular piece (locking actuator).

[0084] The circular piece 5 is the direct locking element of the present invention, with three circular pieces evenly distributed along the circumference.

[0085] Locked state: As the disc retracts radially inward, its front end enters the limiting structure 6 of the mating component, and is thus mechanically constrained.

[0086] Unlocked state: When the disc expands radially outward, it exits the limiting structure and is released from constraint.

[0087] 5. Limiting structure.

[0088] In this embodiment, the limiting structure 6 is a cylindrical slot set in the lock box. After the lock is closed, the disc is inserted into the cylindrical slot to achieve stable three-point constraint and prevent the lock body from being pried open by external force.

[0089] Special note: The illustration shows a cylindrical positioning structure, but this positioning structure is not limited to being cylindrical. It can also be a square slot, a wedge-shaped cavity, or other position limiting components that can limit the movement of the circular piece. Within this range, it falls within the protection scope of this invention.

[0090] 6. Stepper motor and transmission device.

[0091] The stepper motor is fixed to the base disk by the mounting bracket 7, and its output shaft is connected to the nut drive seat 8 so that the inner ring disk rotates around the central axis.

[0092] The motor achieves accurate angle control of the inner disc based on the number of pulses.

[0093] As the inner disc rotates to the "contraction position," the slider moves along the center direction, and the disc is pressed inward by the connecting rod and locked into the limiting cylinder, thus completing the locking.

[0094] When the inner disc rotates to the "outward expansion position", the slider moves away from the central disc and outwards from the limiting post, completing the unlocking action.

[0095] The entire drive chain is as follows: The change in the angle of the inner ring disk of the stepper motor causes the slider to produce radial displacement, which in turn causes the disc to move radially via the connecting rod.

[0096] Example 3: The process of unlocking and locking. This embodiment details the movement logic of the lock body during the opening / closing process: (1) Locking process (radial contraction).

[0097] After receiving the locking command, the stepper motor drives the inner ring disk to rotate counterclockwise to the predetermined "contraction angle." Then, the inner ring disk drives the slider assembly to move, and through the lever action of the linkage mechanism, it drives the three circular pieces to retract synchronously towards the center. Finally, the locking process is completed when all three circular pieces have entered the limiting structure. Because the three circular pieces are in a triangular force-bearing state at this point, their resistance to damage is strong.

[0098] (2) Unlocking process (radial expansion).

[0099] When the stepper motor receives the unlocking signal, it drives the inner disc to rotate clockwise to the "outward expansion angle". At the same time, the slider moves in the opposite direction and pushes the three circular pieces outward at the same time with the connecting rod. When the circular pieces completely leave the limiting structure, the lock body releases the restriction on the door or the lock tongue, thus completing the unlocking process.

[0100] Example 4: System coordination and control method of optical combination lock.

[0101] like Figure 7 As shown, this embodiment uses a Yaskawa 20 series ball screw stepper motor with a length of 28mm, which matches the motor mounting base 7 and the nut mounting base 8. The stepper motor controls the unlocking or locking according to the instructions issued by the drive circuit. In the control board, the light response signal output by the integrated sensing and computing chip is processed by feature extraction, arithmetic processing and analog-to-digital conversion, and the digital optical password is judged. When the judgment result is a valid optical password, an unlocking command is output; if the optical password is invalid, the control board is in a locked state, or an unlocking command is output.

[0102] Special note: The control board and motor models used in this article are only examples. This invention mainly describes the structure and driving method of the mechanical actuator and its use in conjunction with optical passwords. Only one type of optical password is used, but fingerprint, Bluetooth or other authentication methods are also possible, demonstrating outstanding versatility.

[0103] Example 5: Application Case - High-Security Optical Combination Lock Box.

[0104] like Figure 8 As shown, this embodiment provides a lock housing structure for demonstrating the overall operation of the optical combination lock of the present invention. This embodiment integrates the laser optical path, the integrated sensing and computing chip module, the mechanical actuator, and the power control module into the same housing, so as to intuitively present the entire process of optical combination input, verification, and mechanical unlocking of the lock.

[0105] In this embodiment, the combination lock box has an approximately cubic structure, with an effective internal space of about 25mm × 30mm × 30mm. This space is divided into three functional areas: (1) The upper layer is the optical path integration area.

[0106] The upper layer mainly houses the laser light source, optical path limiting structure, multi-stage light-reducing filters, and the integrated sensing and computing chip driver board. To ensure the stability of optical path imaging and optical features, this embodiment incorporates fixed guide rails inside the enclosure, maintaining the laser optical path length at approximately 20cm. This area utilizes light-shielding plates and isolation plates to independently isolate the optical path, thereby preventing light interference from affecting unlocking and recognition accuracy.

[0107] (2) The middle layer is the cavity display area.

[0108] The middle layer serves as a "storage space accessible after unlocking," demonstrating the physical release effect after unlocking. In the normal locked state, this space is completely sealed by a mechanical locking mechanism; after entering the correct optical password and completing the unlocking action, the door opens, and the middle storage area becomes accessible, visually demonstrating the change in the lock's open / closed state.

[0109] (3) The lower layer is the electronics and power module area.

[0110] The lower layer houses the power management module, stepper motor driver, microcontroller, and related interface circuits. To reduce electromagnetic interference, this area is isolated from the optical path area using a metal shield, and mounting brackets are provided for the stepper motor and lead screw drive to ensure stable operation of the mechanical actuator.

[0111] The front of the enclosure serves as the main demonstration interface for this embodiment, and it is equipped with the same mechanical actuation structure as described in Embodiment 2 (including a base disc, an inner rotating disc, a slider, a connecting rod, and circular components, etc.). A small, openable door is located on the outside of the enclosure, with an integrated door handle. This handle is fixed to the outer shell and door panel surface by four fixing bolts, serving as the force point when the door is opened.

[0112] Once the optical password verification is successful, the circular piece expands outward, the lock is released, and the user can directly pull the handle to freely open and close the cabinet door.

[0113] When the password is invalid or the lock is engaged, the disc retracts and fully inserts into the limiting cylinder, securing the door and preventing it from being opened.

[0114] A base disc 1 is installed inside the door, which is locked to the inner surface of the door through three equally spaced fixing holes, making the entire mechanical actuator and the door a complete and stable locking unit. The limiting cylinder structure 6 is installed inside the housing and is fixed to the bottom plate of the housing through the lower frustum structure and positioning hole. When locked, the disc is fully inserted into the limiting cylinder, forming a precisely matched three-point locking structure to effectively lock the door.

[0115] This embodiment integrates an optical path, a sensing and computing chip, a mechanical actuator, a power supply, and a control board into a compact enclosure. This not only provides a comprehensive demonstration of the technical solution of this invention but also showcases the complete chain of optical encryption from input and verification to execution, making the entire system's workflow more intuitive and comprehensive. This application example visually demonstrates the compact structure, high locking force, and ease of integration of this invention's lock body, making it particularly suitable for scenarios such as confidential document cabinets and high-security storage boxes.

[0116] The mechanical lock body execution system and method for combination locks proposed in this invention can be applied to various occasions with high requirements for security, reliability and anti-counterfeiting. Based on the combination of optical password reading and three-point mechanical locking mechanism, it is suitable for the needs of various practical products and is worthy of widespread promotion and use.

[0117] Application Example 1: High-security physical door locks and equipment cabinet locks This invention can be used on high-security physical door locks or equipment cabinet locks, such as devices for storing technical equipment in classified laboratories, scientific research instrument cabinets, communication base station cabinets, or military and classified units. In these applications, optical encryption provides contactless, uncopyable, and difficult-to-forge features for unlocking. The three-circle synchronous locking structure provides stable and reliable physical protection. If the verification is successful, the mechanical actuator precisely executes the unlocking action; if the verification fails, the lock body is in a three-point rigid locking state. Therefore, optical encryption solves the aforementioned technical problems and can be used not only in luggage but also in a wider range of applications.

[0118] Application Example 2: A smart safe is a device used to store valuables.

[0119] This invention can be used not only in smart safes, document safes, and vaults for valuables, but also in other applications. Unlike traditional electronic combination locks and fingerprint locks, this invention uses optical encryption for authentication, eliminating the risk of theft and the copying of biometric data. The three-point mechanical locking structure effectively prevents the lock from becoming unusable due to insufficient force points under pressure or prying. This application is primarily used in financial institutions, archives departments, and high-end asset management companies.

[0120] Application Example 3: Safety Interlock Device for Industrial Control and Intelligent Equipment.

[0121] In industrial automation and intelligent manufacturing, it can be used in industrial control cabinets, as well as in protective doors of automated production lines, or to protect important functional units.

[0122] By using optical cryptography as a trigger condition for device start / stop or authorized operation and connecting it to the mechanical locking mechanism of this invention, this application embodiment can effectively prevent unauthorized personnel from misoperating or illegally opening the device, thereby improving the security and reliability of industrial systems.

[0123] This invention completes the overall design and assembly verification of the mechanical actuator of the optical combination lock and its supporting lock box structure.

[0124] like Figure 2 As shown, the finished mechanical structure of the combination lock body In the lock body structure, the outer base disc serves as a positioning base, while the inner disc rotates with the outer base disc via bearings. Three discs are fixedly connected to the outer base disc by connecting rods. Under the action of the slider, the three discs synchronously retract and expand. A stepper motor is fixed inside the lock body, and its output shaft is connected to the lock body via a fixed base. The output shaft drives the inner disc to rotate, thereby causing the discs to lock and unlock.

[0125] like Figure 3 The diagram shown is a schematic of the lock box structure that matches the lock body.

[0126] In the lock box structure, the entire lock body is placed inside the lock box. By utilizing the limiting structure corresponding to the circular piece set inside the lock box, the radial constraint of the circular piece on the lock body is achieved in the locked state. Assembly and debugging results show that under the constraint of the lock box, the lock body can smoothly realize the unlocking and locking actions, and the lock body does not have any structural interference or movement restriction problems.

[0127] like Figure 9 The image shown is a diagram of the test results of the combination lock. When the key (filter) is correctly input into the optical path, the optical password recognition and judgment module outputs a response signal. After the controller receives the correct signal, it drives the motor to move, successfully verifying that the lock body design is correct. The limit is released, and the door is successfully opened.

[0128] The joint verification results of the lock body and lock box above all show that the mechanical actuator proposed in this paper has the advantages of good structural assembly, reliable movement and high system-level applicability, and can be used independently as a locking module in actual optical combination lock products or some locking occasions that require high security.

[0129] The mechanical actuator described in this embodiment is not a simple superposition of several independent mechanical components, but an overall structural design based on the complete execution logic of "rotation - radial linkage - external constraint release". Its components have clear synergy in terms of spatial layout, motion transmission path and function triggering sequence.

[0130] like Figure 2As shown, the outer base disc of the lock body serves as the positioning and bearing base for the entire mechanism, forming a stable installation reference relationship with the lock box. The inner disc is coaxially mounted with the outer base disc via bearings, allowing the inner disc to have only controlled rotational freedom while maintaining axial and radial positioning accuracy. The three discs are not independent driving components, but are fixed to the outer base disc through a linkage mechanism to form an integrated linkage unit. Under the constraint of the slider, the three always maintain a synchronous radial inward or outward expansion state, thereby avoiding the motion mismatch and reliability degradation problems caused by independent driving of multiple actuators.

[0131] The stepper motor is fixedly installed inside the lock body, and its output shaft is rigidly connected to the inner ring disk via a dedicated mounting bracket. Thus, the angular displacement of the motor is directly and deterministically converted into the rotational motion of the inner ring disk. This rotational motion is further converted into the radial displacement of the three discs synchronously through the geometric constraints of the slider and connecting rod. This conversion process is not a simple transfer of a single degree of freedom, but rather, through the matching of structural geometric parameters, a fixed correspondence between the rotation angle and the radial travel is achieved, ensuring the repeatability and consistency of the locking and unlocking actions.

[0132] like Figure 3 As shown, the lock box is not merely a storage space; it also contains a dedicated limiting structure at the position corresponding to the circular plate. When the lock body is in the locked state, the circular plate expands outward and embeds into the locking box limiting structure, forming a radial rigid constraint that structurally prevents relative movement of the lock body. This limiting relationship does not depend on elastic elements or external continuous driving force, but is determined by the geometry of the lock body itself and the lock box structure, significantly improving the anti-disturbance capability in the locked state.

[0133] During the unlocking process, such as Figure 9 As shown, when the correct key (filter) is input into the optical path, the optical password recognition and decision module outputs a confirmation signal. The controller only drives the stepper motor to operate upon receiving this valid signal. The motor's rotation drives the inner disc to rotate, causing the disc to synchronously retract radially under the guidance of the slider, gradually disengaging from the lock box's limiting structure and achieving a state switch from "structure locked" to "structure released." Throughout the process, a strict causal link is formed between the optical recognition result, the motor drive, and the mechanical unlocking; no single link can independently complete the unlocking action.

[0134] Therefore, this embodiment integrates the optical password decision, the rotary drive mechanism, the radial linkage structure, and the external limiting structure into a unified design, making the locking and unlocking process a continuous and inseparable system-level collaborative mechanism, rather than a simple splicing or parallel combination of independent functional modules in the prior art. This effectively ensures the structural reliability, security, and feasibility in practical applications.

[0135] It should be noted that embodiments of the present invention can be implemented in hardware, software, or a combination of both. The hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or dedicated-design hardware. Those skilled in the art will understand that the above-described devices and methods can be implemented using computer-executable instructions and / or included in processor control code, for example, such code provided on a carrier medium such as a disk, CD, or DVD-ROM, a programmable memory such as read-only memory (firmware), or a data carrier such as an optical or electronic signal carrier. The devices and modules of the present invention can be implemented by hardware circuitry such as very large-scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field-programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of the above-described hardware circuitry and software, such as firmware.

[0136] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A lock body execution system for a dedicated optical combination lock, characterized in that, It includes a base component, an inner ring actuator that can rotate relative to the base component about a central axis, a radial guide structure disposed on the inner ring actuator, a slider assembly that slides along the radial guide structure, a connecting rod assembly hinged to the slider assembly, a plurality of locking actuators that are driven by the connecting rod assembly to move linearly in the radial direction, and a limiting structure that cooperates with the locking actuators; When the inner ring actuator changes angle under the action of the driving source, the slider assembly generates radial displacement in the radial guide structure. The radial displacement is converted into radial linear motion of the locking actuator via the connecting rod assembly, so that the locking actuator switches between the locked position and the unlocked position. The locking position is the state in which the locking actuator moves radially inward and inserts into the limiting structure to form a mechanical constraint. The unlocking position is the state in which the locking actuator moves radially outward and disengages from the limiting structure, releasing the mechanical constraint.

2. The mechanical lock body execution system according to claim 1, characterized in that, The locking actuator consists of three radially movable components evenly distributed along the circumference. In the locked position, the three locking actuators form a three-point force constraint structure within the limiting structure.

3. The mechanical lock body execution system according to claim 1, characterized in that, The radial guide structure is a radial guide groove provided on the inner ring actuator; While the slider assembly rotates with the inner ring actuator, it only generates radial displacement along the direction of the radial guide groove.

4. The mechanical lock body execution system according to claim 1, characterized in that, The inner ring actuator is provided with a drive interface for connecting to an external drive source. The drive interface is used to transmit the rotational motion of an external drive source to the inner ring actuator.

5. A locking and unlocking control method based on the mechanical lock body execution system of claim 1, characterized in that, Includes the following steps: Obtain lock or unlock command; According to the instruction, the inner ring actuator is driven to rotate around the central axis to a predetermined angle position; During the rotation of the inner ring actuator, the slider assembly generates radial displacement within the radial guide structure; The radial displacement is converted into radial linear motion of multiple locking actuators by a linkage assembly; The locking operation is completed when the locking actuator moves radially inward and inserts into the limiting structure. The unlocking operation is completed when the locking actuator moves radially outward and disengages from the limiting structure.

6. The method according to claim 5, characterized in that, During the locking operation, the inner ring actuator rotates to the corresponding contraction angle position, causing the locking actuator to move synchronously towards the center and enter the limiting structure.

7. The method according to claim 5, characterized in that, During the unlocking operation, the inner ring actuator rotates to the corresponding outward expansion angle position, causing the locking actuator to move synchronously away from the center and disengage from the limiting structure.

8. A light-based combination lock system, characterized in that, It includes an optical password recognition module, a control module, and the mechanical lock body execution system as described in claim 1; The optical cryptography recognition module is used to perform feature analysis on the input optical signal and output the authentication result; The control module outputs a locking command or an unlocking command to the mechanical lock body execution system based on the authentication result; The mechanical lock body actuation system completes the switching of the locking actuator between the locking position and the unlocking position according to the instruction.

9. The optical combination lock system according to claim 8, characterized in that, When the authentication result is invalid, the control module maintains the mechanical lock body execution system in the locked position.

10. The optical combination lock system according to claim 8, characterized in that, The optical password recognition module, control module, and mechanical lock body execution system are integrated and housed within the same lock box. The limiting structure is fixed to the lock box body. The mechanical lock body actuation system is fixed to the door, so that the locking actuator forms a direct mechanical engagement with the limiting structure in the locked state.

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